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- 9.6.2011 Researchers at Aalto University Metsähovi Radio Observatory measured strong solar activity on Tuesday 7.6.2011, when a massive coronal mass ejection occurred on the Sun's eastern limb.
The eruption was observed with three different instruments on several radio frequencies; Metsähovi's 13,7 meter radio telescope made a series of images of the eruption at 37 GHz.
Also a 1,8 meter solar antenna that measures the Sun's total radio flux at 11,2 GHz produced time series data of the eruption's intensity.
Additionally, the Callisto solar radio spectrometer made wide band observations of the event in the frequency band at 180-870 MHz.
Lately, solar activity has started rising again after a long time of minimum activity. Strong solar eruptions can damage satellites and cause disturbances in telecommunications.
- 19.5.2011 Aalto University Metsähovi Radio Observatory has been involved in the development of AMS-02 (Alpha Magnetic Spectrometer). AMS-02 will start operating in space onboard the Shuttle Endeavour. Spectrometer will be installed in one of the ISS (International Space Station) arms today May 19, 2011 and will operate for the following 2 to 3 years. Press release in Aalto ELEC pages.
- 25.2.2011 Aalto University Metsähovi Radio Observatory telescope measured strong solar activity on February 15 and 16, 2011. The activity is the strongest measured with the Metsähovi Radio Observatory equipment in five years and the strongest solar radio burst ever measured with the new Callisto measurement system. See also a press release in the Aalto ELEC web page.
- 11.1.2011 Early Release Compact Source Catalogue (ERCSC) of the Planck satellite is published today. The ERCSC is a list of high reliability sources, both Galactic and extragalactic, derived from the data acquired by Planck between August 13 2009 and June 6 2010. See also a press release in the Aalto University web page (in Finnish).
- 4.1.2011
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Metsähovi Solar researchers observed a partial solar eclipse that occurred between 09:32 and 12:13 local time on 4.1.2011.
Radio observations of solar eclipses are much rarer than those made using visible light.
In total eight solar map images were made using the 13,7-meter telescope at 37 GHz between 10:35 and 12:12.
The solar maps show the Moon gliding in front of the Sun from right to left.
See also images and an animation of the eclipse.
- 30.9.2010
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In early September Metsähovi joined the international e-Callisto measurement network to monitor the Sun's broadband radio bursts in the metric and desimetric scale. For this purpose a new measurement equipment was installed. e-Callisto enables the versatile and broadband monitoring of the Sun in the radio frequencies. The first results were received about three weeks after the installation.
The measurement data is analyzed at the University of Technology in Zurich. Every station measures with a frequency that is best when taking into consideration the local RFI. E-Callisto is growing to become a network that covers the whole globe and is able to measure 24 hours a day every day. Because the Metsähovi area is free of RFI it brings a valuable addition to the e-Callisto network.
- 14.9.2010 A 3-year job position in the VLBI team at Metsähovi. We are looking for an emplyee with a background in the field of computer science and/or electronics (FPGA) to participate in the EC FP7 NEXPReS project. Job would start in October or later. See announcement for detailed information.
- 23.6.2010 A project job position in the VLBI team at Metsähovi. We are looking for an under graduate or graduate student with a background in the field of computer science and/or electronics (FPGA). Job would start in September or later. See announcement for detailed information.
- 28.5.2010 Elina Nieppola's dissertation on the subject "Synchrotron emission from blazar jets − energy distributions and radio variability" at Helsinki University of Technology (Espoo), Otakaari 5A, Auditorium S4 at 12 o'clock. Dr. Silke Britzen from Max−Planck − Institut fur Radioastronomie, Germany, is the opponent at the public defense.
- 08.11.2009 Metsähovi Radio Observatory takes part in the International Year of Astronomy (IYA 2009) session organized by the IVS community with
a special astrometric observation with a record of stations participants. The primary goal is to observe 295 ICRF2 defining sources in a single 24-hour session.
- 14.5.2009 Planck launch at 15:12 CEST, 16:12 Finnish local time from Kourou, French Guiana. Watch the launch video.
- 8.5.2009 Talvikki Hovatta's dissertation on the subject
"Radio Variability of Active Galactic Nuclei: Analysis of Long-term
Multifrequency Data" at Helsinki University of Technology (Espoo), Otakaari 5A, Auditorium S4 at 12 o'clock. Professor Thierry Courvoisier, Geneva
University, Switzerland, is the opponent at the public defense.
- 27.04.2009 The European Space Agency (ESA) will launch the Planck satellite in May and Metsähovi Radio Observatory is extensively involved in the project. See the TEKES press release for more details on the satellite project and the Finnish contribution.
- 03.04.2009 Metsähovi Radio Observatory takes part in the 100 hours e-VLBI experiment. The 100 hours of astronomy demonstration will
be held on Friday April 3rd and Sunday April 5th. There will be realtime VLBI observations whose results can be instantaneously seen via the internet. Follow it at
Expres 100 hours demo and Official web page.
- 05.02.2009 Radio astronomers from JIVE institue in collaboration with the Metsähovi Radio Observatory detect water maser emission from the Saturnian system. The discovery of the water maser emission coming from the clouds of water vapour in the Saturnian system is published in this week's issue of A & A. JIVE press release and Metsähovi press release.
- 29.01.2009
Summer job positions at Metsähovi Radio Observatory. We are looking for 1-2 summer students to work in Metsähovi in summer 2009 (early start in May is possible) mainly as observers in the AGN and/or Solar research team. Announcement for detailed information POSITIONS FILLED -- postdocs still open
- 15.01.2009 Metsähovi takes part in the 24 hour of e-VLBI experiment. This demonstration will be held during the opening ceremony of the International Year of Astronomy held in Paris on January 15th/16th at the UNESCO headquarters. Expres IYA2009 and Metsähovi press release.
- 17.11.2008 Metsähovi Radio Observatory at Youtube
- 29.9.2008 Guest lecturer: David G. Messerschmitt: 'Broadband Interstellar Beacons' 10 o'clock at S1, Otakaari 5A, Espoo.
- 26.9.2008 Art installation: a real-time high definition video installation by Terike Haapoja has opened in the Teatterikorkeakoulu, see www.katoavamaisema.fi.
- 8.9.2008 Metsähovi reseachers are
investigating the mystery of Pioneer anomaly (in Finnish)
- 30.6.2008 TKK/Metsähovi radio observatory
made a world record in transferring radio signal over internet (in Finnish)
- 23.5.2008 Ilona Torniainen's dissertation on the subject 'Multifrequency studies of gigahertz-peaked spectrum
sources
and candidates' at Helsinki University of Technology (Espoo) Auditorium S4 at 12 o'clock. Professor Bruce Partridge, Haverford College, USA, is the opponent at the public defense.
- 25.4.2008 We have a new web page layout. If you can't find something please let us know, you can still read the old pages for a while.
- 24.04.2008 This week's Nature journal (vol. 452, 24 April 2008, Marscher A. P. et al. "The Inner Jet
of an Active Galactic Nucleus as Revealed by a
Radio-to-Gamma-ray Outburst") published the discovery made by a team
of astronomers including two Metsähovi scientists, Dr. Anne
Lähteenmäki and Dr. Merja Tornikoski. Dense long term radio
data obtained in Metsähovi played an important role in the
study.
Our press release in Finnish .
More information about the discovery in English,
including images and movies.
- 12.02.2008 Real time UT1 experiments at
JGN2 Symposium
